In a large bowl, combine the crust ingredients and mix well.
Line a pie plate with parchment paper and gently grease it. Transfer the crust ingredients to the pie plate and use your fingers to shape it into a crust.
Bake for 10 minutes at 350°F.
Whisk together the filling ingredients and transfer them to the baked pie crust. Use a spatula to level off the top of the pie.
Refrigerate the pie overnight, then add vegan whipped cream and cut up peanut butter cups on top. Slice and enjoy!
Notes
Prep your pan: Line the pie plate with parchment and lightly grease it so the crust releases easily without crumbling.
Press it firmly: When spreading the cookie crust into the pan, press it down evenly and firmly to help it hold together as it bakes.
Perfect the filling: Add the dairy-free milk to the peanut butter mixture one tablespoon at a time until smooth and creamy—about 3 tablespoons is just right.